Kristen Rasmussen and her team study stormy weather in the Andean foothills of Argentina.
Colorado's hot summer days are spilling out of their regular timeframe. They are starting earlier (June) and staying later (September).
Researchers say they need more data to understand the relationship between climate change and hailstorms.
The record for the biggest hailstorm price tag in Colorado is $2 billion.
From how they form to the largest hail stone on record.
Outrage poured on social media after a video showed grizzly bears being pummeled by baseball-sized hail at Cheyenne Mountain Zoo on Monday.
Five people were taken to the hospital with traumatic injuries after the short but intense afternoon storm passed over Cheyenne Mountain Zoo.
Tornadoes were reported by several spotters, as well as hail up to the size of baseballs.
The most expensive was last year's hailstorm, which resulted in $2 billion in damages.